John Sullivan
11/01/2023 · Elementary School
Exercice 01: \( A B C D \) est un parallélogramme de centre \( O \). on considère les points \( G \) et \( E \) tel que \[ 2 \overrightarrow{E B}-\overrightarrow{E C}-\overrightarrow{0} \text { et } 2 \overrightarrow{G B}-\overrightarrow{G C}+2 \overrightarrow{G D}=\overrightarrow{0} \text {. } \] 1. Montrer que \( B \) est le milieu de \( [C E] \) 2. Montrer que \( G \) est le barycentre des points \( (O, 4) \) et \( (C,-1) \), 3. Exprimer \( \overrightarrow{A G} \) en fonction des vecteurs \( \overrightarrow{A B}, \overrightarrow{A C} \) et \( \overrightarrow{A D} \)
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1. \( B \) هو منتصف \( [C E] \).
2. \( G \) هو مركز ثقل النقاط \( (O, 4) \) و \( (C, -1) \).
3. \( \overrightarrow{A G} \) يمكن التعبير عنه بدلالة المتجهات \( \overrightarrow{A B}, \overrightarrow{A C} \) و \( \overrightarrow{A D} \).
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